I'm so tired of it. Any time you go into a restaurant or walk past a construction site, you hear the workers speaking Proto-Indo-European. THIS IS AN AKKADIAN-SPEAKING COUNTRY!
So you've become a "Great King," have you? But why do you still continue to speak about "friendship" and about coming to Mt. Ammana?... For what reason should I call you "friend"?…Do those who are not on familiar terms with each other call each other "friend"? Why then should I call you "friend"? Were you and I born of neighbours? As my grandfather and my father did not call the King of Assyria "friend," you should not keep writing to me (about) "coming" and "Great King-ship." It displeases me.
a barely-altered version of the letter Hittite king Mursili III sent to Adad-nārārī I of Assyria
There's growing evidence that the Anatolian branch - long thought to be the earliest split - may be better described as a sister branch. If so Proto Indo-Anatolian would be the family, with an Indo-European branch and an Anatolian branch.
I believe this has been a minority position among linguists but recent aDNA data suggests that sister branches is a good fit for the genetics, giving a little more weight to that model for the language.